Asphalt
Gilsonite vs. SBS Polymer for Asphalt Modification
SBS (styrene-butadiene-styrene) polymer and gilsonite are both used to improve asphalt binders, but they work differently.
Gilsonite Asphalt Modification
How gilsonite modifies asphalt binder: dosage, PG grades, rutting resistance, mix design and plant handling.
Asphalt
Improving Rutting Resistance with Gilsonite
Rutting — permanent grooves in the wheel paths — is a common failure in hot climates and on…
Asphalt
Gilsonite Dosage in Hot Mix Asphalt
How much gilsonite should you add to hot mix asphalt (HMA)? The answer depends on the base binder,…
Asphalt
Wet Process vs. Dry Process: Adding Gilsonite to Asphalt
There are two main ways to add gilsonite to asphalt mixtures. Each has advantages. Gilsonite powder is blended…
Asphalt
How Gilsonite Modifies Asphalt Binder
Asphalt binder must be soft enough to resist cracking in winter and stiff enough to resist rutting in…
Recommended product
Data sheet
Asphalt Modifier Grade Gilsonite
| Property | Typical value | Test method |
|---|---|---|
| Appearance | Black powder or granules | Visual |
| Softening point (R&B) | 150 – 200 °C | ASTM D36 |
| Ash content, max | 8 % | ASTM D3174 |
| Moisture, max | 1 % | ASTM D95 |
| Solubility in TCE, min | 95 % | ASTM D2042 |
| Specific gravity @ 25°C | 1.04 – 1.10 | ASTM D70 |
| Particle size | Powder ≤ 200 mesh / granular 1–5 mm | Sieve |
| Typical dosage | 4 – 12 % by weight of binder | |
| Packing | 25 kg bags, meltable bags or 1 MT jumbo bags. | |
Typical values. The final specification is confirmed in the COA of each shipment.